Hi, Binbin, The title of this series can be unified from Loongson-2K500/Loongson-2K to LS2K.
Huacai On Thu, May 15, 2025 at 10:32 AM Binbin Zhou <zhoubin...@loongson.cn> wrote: > > Hi all: > > This patch set introduces the Loongson-2K0500 BMC. > > It is a PCIe device present on servers similar to the Loongson-3C6000. > And it is a multifunctional device (MFD), such as display as a sub-function > of it. > > For IPMI, according to the existing design, we use software simulation to > implement the KCS interface registers: Stauts/Command/Data_Out/Data_In. > > Also since both host side and BMC side read and write kcs status, we use > fifo pointer to ensure data consistency. > > For the display, based on simpledrm, the resolution is read from a fixed > position in the BMC since the hardware does not support auto-detection > of the resolution. Of course, we will try to support multiple > resolutions later, through a vbios-like approach. > > Especially, for the BMC reset function, since the display will be > disconnected when BMC reset, we made a special treatment of re-push. > > Based on this, I will present it in four patches: > patch-1: BMC device PCI resource allocation. > patch-2: IPMI implementation > patch-3: display, based on simpledrm > patch-4: BMC reboot support > > Thanks. > > ------- > V2: > - Drop ls2kdrm, use simpledrm instead. > Patch (1/3): > - Use DEFINE_RES_MEM_NAMED/MFD_CELL_RES simplified code; > - Add resolution fetching due to replacing the original display > solution with simpledrm; > - Add aperture_remove_conflicting_devices() to avoid efifb > conflict with simpledrm. > Patch (3/3): > - This part of the function, moved from the original ls2kdrm to mfd; > - Use set_console to implement the Re-push display function. > > Link to V1: > https://lore.kernel.org/all/cover.1735550269.git.zhoubin...@loongson.cn/ > > Binbin Zhou (3): > mfd: ls2kbmc: Introduce Loongson-2K BMC MFD Core driver > ipmi: Add Loongson-2K BMC support > mfd: ls2kbmc: Add Loongson-2K BMC reset function support > > drivers/char/ipmi/Makefile | 1 + > drivers/char/ipmi/ipmi_si.h | 7 + > drivers/char/ipmi/ipmi_si_intf.c | 3 + > drivers/char/ipmi/ipmi_si_ls2k.c | 250 +++++++++++++++++++ > drivers/mfd/Kconfig | 13 + > drivers/mfd/Makefile | 2 + > drivers/mfd/ls2kbmc-mfd.c | 398 +++++++++++++++++++++++++++++++ > 7 files changed, 674 insertions(+) > create mode 100644 drivers/char/ipmi/ipmi_si_ls2k.c > create mode 100644 drivers/mfd/ls2kbmc-mfd.c > > > base-commit: 9f2b0c15b752bb940e2eb6737bee30fff96d96b6 > -- > 2.47.1 > > _______________________________________________ Openipmi-developer mailing list Openipmi-developer@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openipmi-developer
